Composite wear-resistant refractory brick

Abstract

The utility model relates to the technical field of refractory bricks, in particular to a composite wear-resistant refractory brick, which is characterized in that a wear-resistant layer is wrapped on the outer layer of a brick body, the wear-resistant layer is formed by thermally spraying silicon carbide wear-resistant materials, and the silicon carbide wear-resistant materials can improve the wear resistance of the surface of the brick body and have higher tensile strength and rigid modulus; the high-temperature-resistant brick has the advantages that the strength and the deformation resistance of the brick body can be improved, the high-temperature stability and the heat resistance are good, the brick body can stably exist in a high-temperature environment for a long time, and the service life of the brick body is prolonged; a plurality of hemispherical bulges are uniformly distributed on the surface of the brick body, so that the contact area between adjacent brick bodies can be reduced during carrying, friction surfaces and side surfaces are reduced, the wear resistance of the brick body is improved, the contact area between the surface of the brick body and refractory cement can also be increased, namely, the bonding area of the brick body can be increased, and the larger the bonding area is, the firmer the brick body is bonded, and the more stable the wall body is.

Description

Technical Field

[0001] The utility model relates to the technical field of refractory bricks, in particular to a composite wear-resistant refractory brick. Background Art

[0002] Refractory bricks are a type of brick with good thermal insulation effect. They are made by mixing refractory materials to form a slurry, pouring and molding it, and then firing it to form a brick with fine pores. During the transportation and movement of refractory bricks, it is inevitable that there will be bumps and friction, which will cause the contact surface of the bricks to fall off and affect the quality of the bricks. In addition, when stacking refractory bricks, refractory cement is usually used to bond them together, and the adhesion of refractory cement is used to fix them. The structure is not stable enough and there are certain safety hazards.

[0003] In the patent document with the announcement number CN213837315U, a refractory brick that is easy to splice and wear-resistant is disclosed. A protrusion is provided on the left end face of the brick body and a connecting groove is provided on the right end face. The protrusion is embedded in the connecting groove of the adjacent brick body, so that the bricks in the horizontal direction are closely connected in sequence; limiting grooves are provided at the upper and lower ends of the front and rear side walls of the brick body, and a connecting block is connected to the limiting grooves of the vertically adjacent bricks. The vertical bricks are closely connected in sequence through the connecting block, so that the wall stacked with the refractory bricks is more stable.

[0004] However, it should be noted that the contact cross-sections of the protrusions and the connecting grooves, the connecting blocks and the limiting grooves in this patent are all trapezoidal and are connected by snap-fitting. With this connection method, when stacking bricks, it is necessary to accurately align the protrusions with the connecting grooves or the connecting blocks and the fiber grooves, which is very troublesome. Not only is the construction efficiency low, affecting the progress of the project, but in addition to the snap-fit ​​connection, the bricks still need to be bonded with materials such as refractory cement. The refractory cement will have a certain thickness when applied to the surface of the bricks, making it impossible to align the outer wall of the protrusion with the inner wall of the connecting groove, increasing the difficulty of snap-fitting the bricks.

[0005] To this end, the utility model provides a composite wear-resistant refractory brick, which can improve the wear resistance of the refractory brick and ensure construction efficiency while improving the stability of wall connections. Utility Model Content

[0006] The purpose of the utility model is to solve the problems existing in the prior art and to propose a composite wear-resistant refractory brick.

[0007] In order to achieve the above purpose, the present invention adopts the following technical solutions:

[0008] A composite wear-resistant refractory brick comprises a brick body, wherein a sound-absorbing layer and a fireproof and heat-insulating layer are provided inside the brick body, a plurality of hemispherical protrusions are distributed on the surface, the outer layer of the brick body is wrapped with a wear-resistant layer, and both sides of the brick body are symmetrically provided with embedding grooves at the upper and lower ends, and the embedding grooves on adjacent brick bodies are jointly embedded with a card block.

[0009] Preferably, the two vertical ends of the clamping block are symmetrical pyramids, and the two horizontal ends are symmetrical prisms, and the shape of the embedding groove is adapted to the clamping block.

[0010] Preferably, the wear-resistant layer is formed by thermal spraying of silicon carbide wear-resistant material.

[0011] Preferably, the sound absorbing layer includes a high-frequency sound absorbing layer and a low-frequency sound absorbing layer.

[0012] Preferably, the high-frequency sound-absorbing layer is a fire-resistant porous sound-absorbing material.

[0013] Preferably, the low-frequency sound-absorbing layer is a resonant sound-absorbing structure, comprising a front porous plate and a rear porous plate arranged at intervals, the front porous plate and the rear porous plate being sealed and connected at their peripheries, the aperture of the front porous plate being larger than the aperture of the rear porous plate, and the holes on the front porous plate and the holes on the rear porous plate being staggered.

[0014] Preferably, the porous sound-absorbing material is any one of an inorganic fiber sound-absorbing material and a foam plastic sound-absorbing material, and when it is a foam plastic sound-absorbing material, a mesh frame is provided around it.

[0015] Compared with the prior art, the present invention provides a composite wear-resistant refractory brick with the following beneficial effects.

[0016] 1. The utility model is provided with a wear-resistant layer wrapped on the outer layer of the brick body. The wear-resistant layer is formed by thermal spraying of silicon carbide wear-resistant material. The silicon carbide wear-resistant material can improve the wear resistance of the brick surface. At the same time, the material itself has high tensile strength and rigidity modulus, which can improve the strength and deformation resistance of the brick body. It also has good high-temperature stability and heat resistance, and can exist stably for a long time in a high-temperature environment, thereby increasing the service life of the brick body.

[0017] The surface of the brick is evenly distributed with several hemispherical protrusions, which can reduce the contact area between adjacent bricks during transportation, reduce the friction surface, improve the wear resistance of the bricks, and increase the contact area between the brick surface and the refractory cement, that is, the adhesion area of ​​the brick. The larger the adhesion area, the more secure the bricks are adhered and the more stable the wall.

[0018] 2. The utility model has symmetrical embedding grooves on both sides of the brick body, and the embedding grooves on the adjacent bricks are commonly embedded with a card block, and the card block is embedded in the embedding groove, thereby increasing the connection tightness between the bricks. The vertical ends of the card block are symmetrical pyramids, and the horizontal ends are symmetrical prisms. The shape of the embedding groove is adapted to the card block. At this time, after the horizontal bricks are laid, the card block is embedded in the embedding groove, and the bricks above can be stacked directly without one-to-one comparison, thereby speeding up the stacking efficiency.

[0019] 3. The utility model provides a sound-absorbing layer inside the brick body to improve the sound-absorbing and sound-insulating capabilities of the refractory bricks; a fireproof and heat-insulating layer is provided on both sides of the sound-absorbing layer inside the brick body to improve the heat-insulating properties of the refractory bricks.

[0020] Other advantages, objectives and features of the present invention will be described in the following description to some extent; and will be apparent to those skilled in the art based on an examination of the following; or may be taught from the practice of the present invention to some extent. BRIEF DESCRIPTION OF THE DRAWINGS

[0021] Figure 1 This is a three-dimensional schematic diagram of the connection of four refractory bricks of the present invention.

[0022] Figure 2 For the utility model Figure 1 Schematic cross-sectional view of .

[0023] Figure 3 This is a schematic diagram of the brick body of the refractory brick of the present invention.

[0024] Figure 4 It is a three-dimensional schematic diagram of the card block of the present utility model.

[0025] Figure 5 This is a schematic diagram of the embedding groove of the present utility model.

[0026] Figure 6 For the utility model Figure 2 Schematic diagram of the cross section at AA.

[0027] In the figure: 1. Brick body; 2. Wear-resistant layer; 3. Protrusion; 4. Groove; 5. Block; 6. Fireproof and thermal insulation layer; 7. High-frequency sound-absorbing layer; 8. Low-frequency sound-absorbing layer; 9. Refractory cement. DETAILED DESCRIPTION

[0028] The following is a combination of the appended examples of the present invention Figure 1-6 , the technical solutions in the embodiments of the present invention are described clearly and completely. Obviously, the described embodiments are only part of the embodiments of the present invention, rather than all the embodiments.

[0029] Example 1: In order to improve the wear resistance of refractory bricks, this example provides a composite wear-resistant refractory brick, including a brick body 1. The outer layer of the brick body 1 is wrapped with a wear-resistant layer 2. The wear-resistant layer 2 is formed by thermal spraying of silicon carbide wear-resistant material. The silicon carbide wear-resistant material can improve the wear resistance of the surface of the brick body 1. At the same time, the material itself has high tensile strength and rigidity modulus, which can improve the strength and deformation resistance of the brick body 1. It also has good high-temperature stability and heat resistance, can exist stably for a long time in a high-temperature environment, and improve the service life of the brick body 1.

[0030] The surface of the brick body 1 is evenly distributed with a number of hemispherical protrusions 3, which can reduce the contact area between adjacent brick bodies 1 during transportation, reduce the friction surface, and improve the wear resistance of the brick body 1 on the side. It can also increase the contact area between the surface of the brick body 1 and the refractory cement 9, that is, the adhesion area of ​​the brick body 1. The larger the adhesion area, the more secure the brick body 1 is adhered, and the more stable the wall is.

[0031] Example 2: In order to further improve the connection stability of refractory bricks, in this embodiment, both sides of the brick body 1 are symmetrically provided with embedding grooves 4 at the upper and lower ends, and the embedding grooves 4 on the adjacent brick bodies 1 are commonly embedded with a card block 5. Figure 2 As shown, the clamping block 5 is embedded in the embedding groove 4, thereby increasing the connection tightness between the brick bodies 1;

[0032] In order to ensure the stacking efficiency when the brick body 1 is embedded and connected, the appearance of the card block 5 is improved. Figure 4 and attached Figure 5 As shown, the vertical ends of the block 5 are symmetrical pyramids and the horizontal ends are symmetrical prisms. The shape of the embedding groove 4 is adapted to the block 5. At this time, after the horizontal bricks 1 are laid, the block 5 is embedded in the embedding groove 4, and the bricks 1 above can be stacked directly without one-to-one comparison, thereby speeding up the stacking efficiency. In addition, the size of the block 5 is smaller than the size of the embedding groove 4, that is, when four bricks 1 are stacked together, there is a gap between the block 5 and the embedding groove 4. The gap is left for the laying margin of the refractory cement 9 to avoid the refractory cement being laid horizontally on the surface of the brick 1. The block 5 is inserted into the embedding groove 4, which will lift the upper brick 1 and affect the stability of the wall.

[0033] Example 3: The refractory brick itself has good fire-resistant properties, and through its own fine pores, the sound is transmitted and consumed in the pores, and it has a certain sound-absorbing effect, but the sound-absorbing effect is poor, and it cannot keep warm. Therefore, in this embodiment, a sound-absorbing layer is provided in the brick body 1, and the sound-absorbing and sound-insulating ability of the refractory brick is improved by the sound-absorbing layer; a fire-proof heat-insulating layer 6 is provided on both sides of the sound-absorbing layer in the brick body 1, and the heat-insulating properties of the refractory brick are improved by the fire-proof heat-insulating layer 6.

[0034] The sound absorbing layer is divided into a high-frequency sound absorbing layer 7 and a low-frequency sound absorbing layer 8, which are used to absorb high-frequency and low-frequency sound waves respectively:

[0035] The high-frequency sound-absorbing layer 7 is a fire-resistant porous sound-absorbing material. The porous sound-absorbing material can be any one of an inorganic fiber sound-absorbing material and a foam plastic sound-absorbing material, such as foam metal or polyurethane hard foam. Both materials have good fire resistance. When the foam plastic sound-absorbing material is used, a metal mesh frame is provided inside the brick body 1 along the periphery of the foam plastic sound-absorbing material to prevent its material properties from affecting the strength of the brick body 1.

[0036] The low-frequency sound-absorbing layer 8 is a resonant sound-absorbing structure: it includes a front porous plate and a rear porous plate arranged at intervals, the front porous plate and the rear porous plate are sealed and connected at their peripheries, the aperture of the front porous plate is larger than the aperture of the rear porous plate, the holes on the front porous plate and the holes on the rear porous plate are staggered to form a perforated plate resonant sound-absorbing structure. When sound waves enter the structure, the structure vibrates. When the frequency of the incident sound wave is consistent with the resonant frequency of the system, the air in the neck of the perforated plate produces intense vibration friction, which enhances the absorption effect, forms an absorption peak, and significantly attenuates the sound energy. Preferably, a porous material is placed between the front porous plate and the rear porous plate to increase the acoustic resistance, widen the structural absorption frequency band, and improve the sound absorption effect.

[0037] The above are only preferred specific implementation methods of the present invention, but the protection scope of the present invention is not limited to them. Any technician familiar with the technical field can make equivalent replacements or changes based on the technical solution and utility model concept of the present invention within the technical scope disclosed by the present invention, and they should be covered by the protection scope of the present invention.

[0038] In the description of this specification, the description with reference to the terms "one embodiment", "some embodiments", "example", "specific example", or "some examples" means that the specific features, structures, materials or characteristics described in conjunction with the embodiment or example are included in at least one embodiment or example of the present invention. In this specification, the schematic representations of the above terms do not necessarily refer to the same embodiment or example. Moreover, the specific features, structures, materials or characteristics described can be combined in any one or more embodiments or examples in a suitable manner. In addition, those skilled in the art can combine and combine different embodiments or examples described in this specification and features of different embodiments or examples without contradiction.

[0039] Although the embodiments of the present invention have been shown and described above, it can be understood that the above embodiments are illustrative and cannot be understood as limitations on the present invention. Ordinary technicians in this field can change, modify, replace and modify the above embodiments within the scope of the present invention.

Claims

1. A composite wear-resistant refractory brick, characterized in that: The invention comprises a brick body (1), wherein a sound-absorbing layer and a fireproof and heat-insulating layer (6) are provided inside the brick body (1), a plurality of hemispherical protrusions (3) are uniformly distributed on the surface, the outer layer of the brick body (1) is wrapped with a wear-resistant layer (2), and both sides of the brick body (1) are symmetrically provided with embedded grooves (4) at the upper and lower ends, and the embedded grooves (4) on adjacent brick bodies (1) are commonly embedded with a clamping block (5).

2. A composite wear-resistant refractory brick according to claim 1, characterized in that: The two vertical ends of the clamping block (5) are symmetrical pyramids, and the two horizontal ends are symmetrical prisms, and the shape of the embedding groove (4) is adapted to the clamping block (5).

3. A composite wear-resistant refractory brick according to claim 1, characterized in that: The wear-resistant layer (2) is formed by thermal spraying of silicon carbide wear-resistant material.

4. A composite wear-resistant refractory brick according to claim 1, characterized in that: The sound absorbing layer comprises a high-frequency sound absorbing layer (7) and a low-frequency sound absorbing layer (8).

5. A composite wear-resistant refractory brick according to claim 4, characterized in that: The high-frequency sound-absorbing layer (7) is a fire-resistant porous sound-absorbing material.

6. A composite wear-resistant refractory brick according to claim 4, characterized in that: The low-frequency sound-absorbing layer (8) is a resonant sound-absorbing structure, comprising a front porous plate and a rear porous plate arranged at intervals, the front porous plate and the rear porous plate being sealed and connected at their peripheries, the aperture of the front porous plate being larger than the aperture of the rear porous plate, and the holes on the front porous plate and the holes on the rear porous plate being arranged in an interlaced manner.

7. The composite wear-resistant refractory brick according to claim 5, characterized in that: The porous sound-absorbing material is any one of an inorganic fiber sound-absorbing material and a foam plastic sound-absorbing material, and when the foam plastic sound-absorbing material is used, a mesh frame is provided around the periphery.

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